unshift

Unshift pushes the value in passed to the function to the front of the current sequence.

Parameters

A single number or a boolean (which is then translated to a number by the function)

Returns

the current Sequence.OneD object

Implementation

let seq = new Sequence.OneD([0,0,1,1])
seq.unshift(2)

After calling this operation, the sequence is [2, 0, 0, 1, 1].

let seq = new Sequence.OneD([0,0,1,1])
seq.unshift(true)

In this case, the true is translated by the function as a 1 and then pushed to the front of the sequence [1, 0, 0, 1, 1].